The impending 18 June by-election in Aberdeen South, triggered by SNP MP Stephen Flynn’s resignation after his Scottish Parliament election, features a crowded field including Richard Thomson (SNP), Douglas Lumsden (Conservatives), Nurul Hoque Ali (Labour), Jo Hart (Reform UK), Jorg Shelton-Eckstein (Greens), Mel Sullivan (Liberal Democrats), and others. Trader odds remain tightly clustered near 40-50% because the short campaign has centered on North Sea energy policy without decisive shifts in local support, while opposition fragmentation and limited polling leave room for last-minute swings in turnout or tactical voting. Scheduled debates and candidate announcements in late May have not yet produced clear separation, sustaining broad uncertainty ahead of polling day.